EP1104353A1 - Wheel suspension - Google Patents

Wheel suspension

Info

Publication number
EP1104353A1
EP1104353A1 EP98945673A EP98945673A EP1104353A1 EP 1104353 A1 EP1104353 A1 EP 1104353A1 EP 98945673 A EP98945673 A EP 98945673A EP 98945673 A EP98945673 A EP 98945673A EP 1104353 A1 EP1104353 A1 EP 1104353A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
groove
wheel
board
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98945673A
Other languages
German (de)
French (fr)
Inventor
Jöran Lundh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUNDH, JOERAN
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1104353A1 publication Critical patent/EP1104353A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general ; Anti-clogging castors
    • B60B33/04—Castors in general ; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
    • B60B33/045—Castors in general ; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted resiliently, by means of dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/28—Auxiliary dismountable seats ; Additional platforms for children in standing-up position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
    • B62B2301/20—Resilient wheel suspension using springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/08—Children's seats ; Seats or supports for other persons
    • B62B5/087—Platforms to stand upon
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7047—Radially interposed shim or bushing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7047—Radially interposed shim or bushing
    • Y10T403/7061—Resilient

Definitions

  • the present invention is for a device for mounting of wheels so that they are movable in a preferably vertical direction at right angle to the axis of rotation of the wheel.
  • the invention also is for a standing board for prams with such a wheel mounting.
  • Standing boards for prams are intended to be attached to the pram in order to make it possible for a brother or sister or another a little older child to come along standing on the board.
  • the board is carried by a mounting at the rear axle and by two wheels adjacent the rear end of the board.
  • the wheels of the board are mounted so that they may be turned around a vertical axis.
  • the mounting at the rear axle also allows the board to turn around it to enable the passing of kerbs and other minor hindrances.
  • the wheels of the board are mounted thereto without any other possible movements except for the turning around a vertical shaft mentioned above.
  • the non-resilient function causes blows and bounces of the board which give an uncomfortable feeling and may cause the child who is riding on the board to make sudden motions or fall of the board. Blows and bounces, even of small strength, cause noise and sounds which may be very disturbing.
  • the present invention is for a wheel mounting which allows resilient motion in the direction of the turning axis of the wheel, mainly in vertical direction.
  • the device is primarily intended for standing boards for prams but may also be used for other applications where there is only a limited space available in the direction of the resilient movement.
  • One object of the invention is to enable resilience in a direction where the space available is very limited. It is also an object of the invention to achieve a steady mounting and control of the movable parts. It is a further object to reduce the sound and noise which is caused by the standing board.
  • Figure 1 shows a standing board which is attached to the rear axle of a pram.
  • Figure 2 is a cross section of a device according to the invention.
  • Figure 3 shows the mounting part o a standing board.
  • FIGS 4 and 5 show parts included in the device of the invention.
  • Figure 6 shows a wheel together with its wheel fork and turning axis.
  • the standing 1 board which is shown in figure 1 has a mounting means 2 at its front end by means of which the standing board is rotatably attached to the rear axle of a pram the main direction of moving is shown by arrow 4.
  • the mounting allows turning both around the axle 3 of the pram and around an axle which is parallel with the direction of movement by which the mounting means 2 is attached to the board 1.
  • At the rear end of the standing board there are two wheels 5 and 6 which are carried by wheel shafts in wheel forks 7 and 8 which are pivotably mounted into the standing board.
  • the mounting to the standing board is made so that the wheels and the wheel forks may spring in a mainly vertical direction at right angle to the standing board.
  • the device of the invention is shown in cross section without wheel and wheel fork in figure 2 and the various parts thereof are shown in cross section in figures 3-5.
  • a wheel of the kin which is mostly used for standing boards is shown in figure 6.
  • the parts of figures 4 and 5 are preferably made with circular cross sections at right angle to the plane of the figures.
  • the device includes both parts which are fixed to the standing board and preferably are made in one piece with it and movable parts according to figures 4-6.
  • the fixed parts are shown integrated with the board 1 and enclosed by a hood 27 which forms a part of the board 1.
  • the fixed parts comprise an outer tube 24 and an inner tube 9.
  • the tube 24 encloses a first inner space 10 and the tube 9 encloses a second inner space 11.
  • stops or bars which form stops for the movable parts at the maximum springing length.
  • a bushing 12 is mounted into the tube 4 and by means of screws through holes in the flanges 13 mounted into the holes 22 and 23 therefor.
  • the bushing 12 there is a movable sleeve 14 which moves in the opening 25 of the bushing 12.
  • the movements of the sleeve in the bushing are delimited both by a somewhat protruding edge 17 at the bushing and the corresponding inner edge 18 of the bushing, and by the above mentioned bars 19 in that part of the mounting which is included in the standing board.
  • the sleeve 14 there is also a groove 16 the dimensions of which correspond to the tube 9 of the mounting part so that this tube may be inserted into the groove.
  • the groove 16 there is also a spiral spring 15 which contacts both the bottom of the groove 16 and the lower edge of the tube 9.
  • the sleeve 14 there is also a central hole 20 which is open downwards and into which the shaft 26 which is fixed to the wheel fork 7 is inserted and fixed in known manner by snap fastening at the inwardly turned ring 21.
  • the resilient springing means is shown without load in figure 2 and it is apparent that the movements of the sleeve 14 is limited by co-operation with the bushing 12 at the edges 17 and 18.
  • the tube 9 is inserted a little into the groove 16 and the spring 15 contacts the lower edge of the tube.
  • the sleeve 14 is loaded in a direction upwards in he figure by influence from the shaft 26 which is inserted into the hole 20 and the sleeve moves upwards, maximally to contact with the bar 19.
  • the sleeve is then controlled both by the outer surrounding bushing 12 and the tube 9. Thereby that the sleeve is so controlled at both its ends one achieves a straight springing movement without that the sleeve breaks away to the side which means both safe function and reduced wear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Vibration Prevention Devices (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)

Abstract

The present invention is for a device for mounting of wheels so that they may move in a preferably vertical direction at right angle to the wheel shaft. The invention is also for standing board for prams having such wheel mounting. At its front end the standing board (1) has a mounting means (2) by which the standing board is pivotably mounted to the rear axle (3) of a pram the main direction of movement of wich is shown by arrow (4). The turning shaft (26) of the wheel is mounted in a movable sleeve (14) the movements of which are controlled both by a bushing (12) which surrounds the sleeve and by a tube (9) which is partially inserted into a groove (16) in the sleeve. A spring (15) is placed into the groove (16) in the sleeve (14) so that the spring contacts both the bottom of the groove and the end of the tube (9) which penetrates the groove.

Description

Wheel suspension The present invention is for a device for mounting of wheels so that they are movable in a preferably vertical direction at right angle to the axis of rotation of the wheel. The invention also is for a standing board for prams with such a wheel mounting.
Standing boards for prams are intended to be attached to the pram in order to make it possible for a brother or sister or another a little older child to come along standing on the board. Usually it is adapted to be attached to the rear wheel axle of the pram and the child is standing between the body and the handle of the pram. The board is carried by a mounting at the rear axle and by two wheels adjacent the rear end of the board. The wheels of the board are mounted so that they may be turned around a vertical axis. The mounting at the rear axle also allows the board to turn around it to enable the passing of kerbs and other minor hindrances. The wheels of the board are mounted thereto without any other possible movements except for the turning around a vertical shaft mentioned above. The non-resilient function causes blows and bounces of the board which give an uncomfortable feeling and may cause the child who is riding on the board to make sudden motions or fall of the board. Blows and bounces, even of small strength, cause noise and sounds which may be very disturbing.
The present invention is for a wheel mounting which allows resilient motion in the direction of the turning axis of the wheel, mainly in vertical direction. The device is primarily intended for standing boards for prams but may also be used for other applications where there is only a limited space available in the direction of the resilient movement. One object of the invention is to enable resilience in a direction where the space available is very limited. It is also an object of the invention to achieve a steady mounting and control of the movable parts. It is a further object to reduce the sound and noise which is caused by the standing board.
The invention will below be described more in detail with reference to the examples of embodiments thereof which are shown in the enclosed drawings.
Figure 1 shows a standing board which is attached to the rear axle of a pram.
Figure 2 is a cross section of a device according to the invention. Figure 3 shows the mounting part o a standing board.
Figures 4 and 5 show parts included in the device of the invention.
Figure 6 shows a wheel together with its wheel fork and turning axis.
The standing 1 board which is shown in figure 1 has a mounting means 2 at its front end by means of which the standing board is rotatably attached to the rear axle of a pram the main direction of moving is shown by arrow 4. The mounting allows turning both around the axle 3 of the pram and around an axle which is parallel with the direction of movement by which the mounting means 2 is attached to the board 1. At the rear end of the standing board there are two wheels 5 and 6 which are carried by wheel shafts in wheel forks 7 and 8 which are pivotably mounted into the standing board. According to the invention the mounting to the standing board is made so that the wheels and the wheel forks may spring in a mainly vertical direction at right angle to the standing board.
The device of the invention is shown in cross section without wheel and wheel fork in figure 2 and the various parts thereof are shown in cross section in figures 3-5. A wheel of the kin which is mostly used for standing boards is shown in figure 6. For reasons of production technology the parts of figures 4 and 5 are preferably made with circular cross sections at right angle to the plane of the figures.
The device includes both parts which are fixed to the standing board and preferably are made in one piece with it and movable parts according to figures 4-6. In figure 3 the fixed parts are shown integrated with the board 1 and enclosed by a hood 27 which forms a part of the board 1. The fixed parts comprise an outer tube 24 and an inner tube 9. The tube 24 encloses a first inner space 10 and the tube 9 encloses a second inner space 11. In the inner tube 9 there are also stops or bars which form stops for the movable parts at the maximum springing length. A bushing 12 is mounted into the tube 4 and by means of screws through holes in the flanges 13 mounted into the holes 22 and 23 therefor. In the bushing 12 there is a movable sleeve 14 which moves in the opening 25 of the bushing 12. The movements of the sleeve in the bushing are delimited both by a somewhat protruding edge 17 at the bushing and the corresponding inner edge 18 of the bushing, and by the above mentioned bars 19 in that part of the mounting which is included in the standing board. In the sleeve 14 there is also a groove 16 the dimensions of which correspond to the tube 9 of the mounting part so that this tube may be inserted into the groove. In the groove 16 there is also a spiral spring 15 which contacts both the bottom of the groove 16 and the lower edge of the tube 9. In the sleeve 14 there is also a central hole 20 which is open downwards and into which the shaft 26 which is fixed to the wheel fork 7 is inserted and fixed in known manner by snap fastening at the inwardly turned ring 21.
The resilient springing means is shown without load in figure 2 and it is apparent that the movements of the sleeve 14 is limited by co-operation with the bushing 12 at the edges 17 and 18. The tube 9 is inserted a little into the groove 16 and the spring 15 contacts the lower edge of the tube. At a springing movement the sleeve 14 is loaded in a direction upwards in he figure by influence from the shaft 26 which is inserted into the hole 20 and the sleeve moves upwards, maximally to contact with the bar 19. The sleeve is then controlled both by the outer surrounding bushing 12 and the tube 9. Thereby that the sleeve is so controlled at both its ends one achieves a straight springing movement without that the sleeve breaks away to the side which means both safe function and reduced wear.

Claims

1. Device for resilient mounting of turnable wheels characterized in that the turning shaft (26) of the wheel is mounted into a movable sleeve (14) the movements of which are controlled both by a bushing (12) which surrounds the sleeve and by a tube (9) which is partially inserted into a groove (16) in the sleeve.
2. Device according to claim 1 characterized in that a spring (15) is placed in the groove 8(16) in the sleeve (14) so that the spring contacts both the bottom of the groove and the end of the tube (9) which is inserted into the groove.
3. Standing board for prams characterized in that the wheels of the standing board are resiliently mounted by means of devices according to any of the preceding claims.
EP98945673A 1998-08-20 1998-08-20 Wheel suspension Withdrawn EP1104353A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1998/001494 WO2000010816A1 (en) 1998-08-20 1998-08-20 Wheel suspension

Publications (1)

Publication Number Publication Date
EP1104353A1 true EP1104353A1 (en) 2001-06-06

Family

ID=20411121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98945673A Withdrawn EP1104353A1 (en) 1998-08-20 1998-08-20 Wheel suspension

Country Status (6)

Country Link
US (1) US6371498B2 (en)
EP (1) EP1104353A1 (en)
JP (1) JP2002523272A (en)
AU (1) AU9286198A (en)
ES (1) ES2170039T1 (en)
WO (1) WO2000010816A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109094703A (en) * 2018-08-26 2018-12-28 深圳市领航致远科技有限公司 A kind of wheel axle fixing structure peace weighing apparatus vehicle of balance car

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6827356B2 (en) * 2003-02-26 2004-12-07 Yu-Lin Zhuang Rear carrying board assembly of a stroller
SE526187C2 (en) * 2003-10-29 2005-07-19 Joeran Lundh standing board
DE102004061087B4 (en) * 2004-12-18 2006-12-07 A. Raymond Et Cie Device for attaching an attachment and a support member at a distance from each other
BRPI0520194B8 (en) * 2005-04-26 2019-08-20 Emilsider Mecc S P A self oriented caster
US8960106B2 (en) * 2006-05-15 2015-02-24 Aichi Co., Ltd. Desk
US8714582B2 (en) 2008-09-29 2014-05-06 Orbit Baby, Inc. Ride along board for baby stroller
CN201930489U (en) * 2010-12-02 2011-08-17 张盛 Front-wheel fine-adjusting structure
US20150197264A1 (en) * 2013-07-26 2015-07-16 Mark Fields Rolling board
US9776069B2 (en) * 2015-04-15 2017-10-03 Travis Mckay Stroller-attachable skateboard apparatus
US9770954B1 (en) 2015-08-05 2017-09-26 Donald P. Clark Self-aligning wheeled trailer connecting mechanism
US9643669B1 (en) * 2015-08-05 2017-05-09 Donald P. Clark Attachable laterally-stable range extender for an electric vehicle
CN109017154B (en) * 2018-08-13 2021-05-28 南京幸庄科技创新产业园管理有限公司 Caster of baby carriage
USD900682S1 (en) * 2018-11-07 2020-11-03 Thomas Briggs Stroller attachment
US20240016270A1 (en) * 2022-07-13 2024-01-18 Stephen Davis Luggage with replaceable wheels

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US726447A (en) * 1902-05-17 1903-04-28 Hugh Mcdonnell Caster.
US1834617A (en) * 1930-11-08 1931-12-01 Philip T Harpine Self adjusting caster
US1944185A (en) * 1932-02-18 1934-01-23 Edward J Langer Trunnion adjustable support
US1906238A (en) * 1932-06-02 1933-05-02 Faultless Caster Co Top bearing adjustable and cushion frame for casters
US2325895A (en) * 1942-02-09 1943-08-03 Cleveland Pneumatic Tool Co Caster wheel mounting
DE2344208C3 (en) * 1973-09-01 1978-05-24 Acousa Saxon S.A., Saxon (Schweiz) Centrally lockable swivel castor, especially for movable hospital beds
DE2422154A1 (en) * 1974-05-08 1975-11-27 Schulte Soehne Kg A STEERING CASTOR FOR EQUIPMENT, FURNITURE, ETC. ESPECIALLY SICK BEDS
US4077086A (en) * 1977-01-10 1978-03-07 Michael James Butler Retractable castor mechanism
GB9301497D0 (en) * 1993-01-26 1993-03-17 Fairclough Albert T Multi-purpose push chair/shopping trolley.for use of conveying a child and shopping bag or two children on sitting and one standing
US5975545A (en) * 1998-04-01 1999-11-02 Hu; Stephen Structure of wheel seat for a baby stroller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0010816A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109094703A (en) * 2018-08-26 2018-12-28 深圳市领航致远科技有限公司 A kind of wheel axle fixing structure peace weighing apparatus vehicle of balance car
CN109094703B (en) * 2018-08-26 2020-09-15 深圳市领航致远科技有限公司 Wheel axle fixing structure of balance car and balance car

Also Published As

Publication number Publication date
US6371498B2 (en) 2002-04-16
AU9286198A (en) 2000-03-14
JP2002523272A (en) 2002-07-30
ES2170039T1 (en) 2002-08-01
US20010004785A1 (en) 2001-06-28
WO2000010816A1 (en) 2000-03-02

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